Apparatus for fire-polishing.



No. 737,400. PATENTED AUG. 25, 1903. D. W. GUNDLAGH.

APPARATUS FOR FIRE POLISHING. I

APPLIOATION' FILED JUNE 18, 1901.

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UNlTED STATEs Patented August 25, 1903.

PATENT OFFICE.

DIEDRICH WILHELM GUNDLACI-l, OF ALTONA, GERMANY.

APPARATUS FOR FI RE-POLIS HING.

SPECIFICATION forming part of Letters Patent No. 737,400, dated August 25, 1903.

Application filed June 18, 1901. $eria1 No. 65,016. (No model.)

T0 at whom it may concern.-

Be it known that I, DIEDRICH WILHELM GUNDLAOH, a subject of the King of Prussia, residing at Altona, Germany, have invented certain new and useful Improvements in Apparatus for Fire-Polishing, of which the following is a specification.

- This invention relates to an apparatus for fire-polishing the edges of glasses with a free melting flame, the essential novelty of which is a movable table that will allow of its working without interruption and is arranged in such a way that the heat coming oflf the flame, which properly serves for melting up the edges of the glasses,is at the same time availed of for the preparatory heating of the glasses, whereby the disadvantage connected with the melting-machines heretofore used of consuming a large quantity of gas over and above what is reasonably required by the melting process is entirely done away with, and thus a machine is provided which will work exceedingly well in every respect.

In the accompanying drawings the machine is represented by Figure 1 in front View, by Fig. 2 in plan, and by Fig. 3 in section on line ABODofFig. 2.

It chiefly consists of a number of spindles a, that bear at their upper ends one plateb each, that serves as a base for the glass to be melted up, and at their lower end a small cog-wheel 0. These spindles are inserted in the hollow bolts or sockets d of a link chain f, that runs in an upright position and in a horizontal plane upon chain-pulleys g and h, the former of which is made to turn by a shaft 2' by the conical wheels 70. A link chainl (which has been omitted in Figs. 1 and 3 for the sake of distinctness) engages into the cog-wheels c of the spindles a. It is led over chain-wheels m and 'n and moved through the wheel m from shaft 1 by means of the conical wheels 0, in a direction contrary to the course of the chain f. To prevent the chain f from sagging, there are provided between the chain-pulleys g and h two supports 19, on which plates q are fixed, on the upper edge of which the plates of the chain glide while at the outside the chainbolts roll. To make it possible to strain the chains f and Z, on one hand, the right hearing may be adjusted by a screw 0, and, on the other hand, the chain-wheel a may be disposed in a slot in the bearing. A table a carries the burner, which is placed opposite to one of the runs of chain f. This burner consists of a pipe w, having perforations c, that are arranged side by side or above one another, so as to emit a number of small open flame-jets. The table a is adjustably connected by pins t and winged nuts t to rods y, adapted to slide vertically in perforations of the frame. It is supported by a verticallymovable worm-shaft 2, having a hand-wheel z and engaging a threaded hub z of the frame, so that the burner may be raised or lowered by turning the hand-wheel.

The operation of the machine is as follows: After the chainsfand Z have been set into motion by driving the shaft '6 and the flame has been ignited the glasses to be melted up are set on the plates 1) at the place marked with I in Fig. 2. They are then heated gradually in a preparatory way as they run through the outer part of the Way of the chain and then melted up while moving over the inner part of the way, so that they can be taken off as ready when at l of Fig. 2.

The advantage this machine has over the melting-up machines known with movable working-table is, as mentioned already, that the glasses on account of the small width of the Way wherein they are made to pass by the burner are heated and melted up by one and the same flame, which will efiect, on one hand, agreat saving of gas and, on the other hand, a considerable increase of the velocity at which the glasses are made to pass by the burner, thus giving to the machine a capacity of production not as yet obtained by any other machine of the kind.

I claim- 1. In a machine for fire-polishing glasses, the combination of an endless chain with means for driving said chain, spindles carried by the chain, chain-wheels mounted upon the spindles, a second endless chain engaging the chain-wheels, and means for driving said second chain in a direction opposite to that of the first chain, substantially as specified.

2. In a machine for fire-polishing glasses, the combination of a burner, with an endless chain having sockets, means for driving said chain, plates having spindles that are en- Signed atHamburg, Germany, this 4th day gaged by the chain-sockets, chain-wheels of June, A. D. 1901. mounted upon the spindles, a second endless chain engaging the chain-Wheels, and means 5 for driving said second chain in a direction Witnesses:

opposite to that of the first chain, substan- MAX FOUGUOT, tially as specified. I FRANZ STEFFENS.

DIEDRIOH WILH ELM GUNDLACH. 

